Disk louver



Oct. 20,1942. KIRLIN 2,299,276

DISK-'LOUYER Filed March 7, 1941 INVENTOR. BY pm/H 2PM Patented Oct. 20, 1942 UNITED STATES PATENT OFFICE DISK LOUVER Ivan Kirlin, Detroit, Mich.

Application March 7, 1941, Serial No. 382,144

3 Claim.

This invention relates to a disk-louver, and

more particularly to' light reflecting and deflecting means removably attachable to an illuminating tube such as for example a fluorescent lisht tube.

I Heretofore with tube illumination of this type there heas existed a need for an inexpensive reflecting device which would be readily attachable to and removable from the tube.

Heretofore there heas been the need of a reflecting and glare eliminating device of substantially light weight which would be readily adaptable to attachment to any type of illuminating tube.

It is the object hereof'to provide a disk-louver consisting of a plurality of spaced reflecting elements, with supporting means therefor, and with means adaptable readily for attachment to and detachment from an illuminating tube.

It is the further object hereof to provide a disk-louver or glare eliminator consisting of a unitary rigid structure, inexpensive to manufacture, eliminating nuts and bolts, and at the same time ornamental in appearance.

The invention relates to the various arrangements of elements and parts and their combinations as hereinafter set out in detail in connection with the appended drawing of which:

Figure 1 is a perspective view of the disk-louver.

Figure 2 is a perspective view of the same attached to an illuminating tube.

Figure 3 is an elevational view of a disk member with supporting means shown.

The above drawing is merely an illustration of a preferable embodiment of the invention.

In the drawing, the disk-louver consists of a plurality of arcuate reflecting and deflecting elements ll preferably semi-circular in shape. It is understood, however, that any other suitable shape is equally applicable, however, it is believed that elements H as shown with the central recess I! are best adapted for cooperation with the surface of an illuminating tube It as hereinafter described in detail.

Reflecting elements II are slotted at It and are adapted to receive a plurality of longitudinally disposed disk supporting means It. Elements II are disposed in spaced relation upon supports i5 and secured thereto, as by welding, soldering,

crimping, or in any other suitable manner.

The preferable embodiment shows two supporting elements l5, however, it would be possible to support the reflecting elements II with one longitudinal element It or with a plurality of such elements.

Resilient means such as clips it are centrally secured to the lateral surface of disks H such as by welding or soldering. It will be noted that said resilient means are adapted to removably engage the surface of an illuminating tube whereby the disk-louver is readily attachable to or detachable therefrom.

The spring clips it are evenly spaced on the disk-louver depending upon the length thereof and provide a readily operable attaching means which will not injure the tube.

It will be noted further that clips it are on the side of elements II and not upon the upper edge, because in so doing the disk-louver may be snugly disposed adjacent the illuminating tube, with the latter nested within the central semi-circular recesses of the disks H.

Disks II are adapted to reflect, deflect, and disperse light, and in so doing reduce disturbing glare. At the same time it will be seen that free ventilation is provided to the tube l3 through the. spaces defined by the disks II.

The longitudinally disposed elements l5 also deflect and reflect illumination thus serving a double purpose. It is understood that elements it may be of difierent shapes as for instance, broader so as to more completely deflect the light.

Spring clips l6 enable the disk-louver to be readily attached to the tube i3 as shown in Figure 2 and facilitate its removal for cleaning purposes, or for replacing a burnt tube. A support I1 is shown to which the illuminating tube It is attached at its ends and by means of which electrical connection is made thereto.

It will be understood that other modes of attachment may be adapted which operate similarly to clips IE, or on the other hand said clips may be attached to the longitudinally disposed supporting means It rather than to the disks ll.

When the illuminating tubes become spotted after considerable use their appearance is not so attractive. By employing the disk-louver as hereinabove described this poor appearance is r substantially obscured by said ornamental disklouver attached thereto.

This louver is readily adaptable to fixtures having a plurality of illuminating tubes with the result that a complete diifusion and deflection of light is obtained.

It will be noted that the disk-louver is relatively inexpensive to manufacture, due to the minimum number of parts and the minimum number of working and assembling operations.

Having described my invention, reference 1 should now be had to the claims which iollowgior determining the I claim:

1. A reflecting louver device nection with an elongated tubular light source, said device comprising a plurality of semi-circular flat. reflecting members each provided with a central arcuate recess at its upper portion for scope thereof.

the'reception of said light source, inclined slots formed adjacent the arcuate recess in each member, a pair otlflat light diffusing members extending throughout the width of said device and for use in con- 2. A reflecting louver device forum in connection with an elongated tubular light source, said 1 device comprising a plurality'oi semi-circular flat reflecting members each provided with a central arcuate recess at its upper portion for the reception 0! said light source, inclined slots formed adjacentthe arcuate recess in each member, light diilusing members extending throughout the width of said device and engaging said slots for maintaining said flat members in spaced apart relation to one another, and resilient arcu-, ate clips secured to some of said members between the slots and central recess of said members and extending upwardly therefrom for engagement with the tubular light source for maintaining said louver device in proper position.

3. A reflecting louver device for use in connection with an elongated tubular light source said device comprising a plurality of flat thin reflecting members each provided with a central arcuate recess at its upper portion for the reception of said light source, inclined slots formed closely adjacent the arcuate recess in 'each member, a pair of flat light diffusing members extending throughout the width oi said device and engaging said slots for maintaining said fiat members in spaced apart relation to one another, and resilient spring wire clips secured to some of said members between the slots and the central recess of said members and extending upwardly therefrom for engagement with the tubular light source for maintaining said louver device in proper position.

IVAN KIRLIN. 

